Tuyere



J. STOLL.

TUYERE.

(No Model.)

Patented Mar. 16, 1886.

NITED STATES PATENT ()FFICE.

JACOB STOLL, OF MILWAUKEE, WVISCONSIN.

TUYERE.

SPECIFEGATIQN forming part of Letters Patent No. 337,886, dated March 16, 1886.

Application filed May 2, 1853. Renewed August 10, 1885. Serial No. 174,087. (No model.)

To all 1072 0122, it may concern.-

Be it known that I, J ACOB S'roLL, ofthe city of Milwaukee, in the State of \Visconsin, have invented a certain new and useful Improvement in Tuyeres, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, and in which Figure 1 is a side elevation. Fig. 2 is a vertical longitudinal section taken on line 2 2, Fig. 5. Fig. 3 is an end view of the rear end of the apparatus. Fig. 4 is a transverse vertical section taken on line 4 4., Fig. 1. Fig. 5 is a horizontal transverse section taken on line 5 5, Fig. 2, looking downward. Fig. 6 is a vertical section of the removable cap, and Fig. 7 is a bottom view of the hollow leg, showing the damper open.

My invention relates to forge-tuyeres; and my invention consists in points of novelty hereinafter fully described, and pointed out in the claims.

Referring to the drawings, A represents the outer shell of the tuyere, and B the inner pipe, through which the air-blast is forced by the bellows, as shown by the arrows, Fig. 2. There is a space between the pipe and shell for the escape of the gases from the fire. The passage of the gas is shown by the arrows, Fig. 2. The pipe is held concentrically within the shell by projecting arms 0 at the rear or back end, and by a collar, D, at the front end. The shell is made in two parts, connected by bolts or pins E passing through lugs F. (See Figs. 1 and 2.) The forward end of the pipe B has a hollow downward]y-projecting leg or part, G, which has a damper, H, pivoted to its bottom. This leg answers two purposesfirst, to allow part of the blast to escape by opening the damper more or less when the air-current is too strong, thereby regulating the fire, and, secondly, to allow any dirt entering the pipe to fall directly through and not clog the pipe.

I represents the removable cap, fitting snugly on the shell, and connected to the pipe by horizontal outwardly-extending lugs J of the pipe, (see Fig. 5,) which engage with inclined faces of an inwardly-projecting collar, K, of the cap. (See Figs. 2, 5, and 6.)

There are slots L in the collar K for the passage of the lugs J as the cap is put on, and then by turning the cap the lugs bearing on the incline faces of the collar tighten and hold it in place. The openings L (see Figs. 2 and 6) through the collar allow the passage of gases from the chamber N in the cap above the collar to the chamber between the shell and pipe, from where they escape. The cap has a central opening, 0, through which the jet of air passes, and this hole is counterbored on top, (see Figs. 2 and 6,) so that the air current will be spread after passing through the narrow neck. The cap has an annular flange, P, extending down into the chamber N, which fits on top of the pipe when the cap is in place. (See Fig. 2.) Either this flange or else the top of the pipe is provided with notches Q, to allow the gases to escape from the fire into the chamber N. (See Figs. 2 and 6.) \Vhen a cap becomes destroyed by being burned, it can be easily and quickly removed and replaced by another.

I claim as my invention 1. In a tuyere, the combination of the outer shell, removable cap, and the blast-pipe having hollow leg, substantially as shown and described, for the purpose set forth.

2. The combination of outer shell, cap, and blast-pipe having hollow leg, substantially as and for the purpose set forth.

3. The combination of outer shell, cap, and blast-pipe having hollow leg provided with a damper, substantially as and for the purpose set forth.

4. In a tuyere, the combination of outer shell, removable cap having collar K, said collar having slots L, and the blast-pipe having lugs to engage the collar to secure the cap in place, as set forth.

5. In a tuyere, the combination of shell A, pipe 13, having hollow leg G, damper H, and lugs J, and the cap I, having chamber N,

counterbored opening 0, flange P, openings Q, and collar K, with slots or openings L, all substantially as shown and described, for the purpose set forth.

JACOB STOLL. In presence of- Gno. H. KNIGHT, JosEPH WAHLE. 

